title: Use of ball insentive inspirometer in post-operative respiratory care. Clinical trial.
mesh_terms: D000328:Adult; D000368:Aged; D001945:Breathing Exercises; D002245:Carbon Dioxide / Q000097:blood; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care / Q000379:methods*; D011897:Random Allocation; D012119:Respiration
chemical_list: D002245:Carbon Dioxide